The ZDF Promotions Mainzelmännchen Cube is a regular 3x3x3 Rubik's Cube.
ZDF is a public German TV channel (Zweites Deutsches Fernsehen = Second German Television). The "Mainzelmännchen" are six cute guys appearing between the promotion spots with small own videos. They are present since the early years of this channel and are kind of a cult in Germany. It was a big discussion when some years ago the appearance of the figures was modernised. The Mainzelmännchen cube is available at the ZDF online shop for 10€.

the Latin Calendar Cube was made from a regular 3x3x3 Cube with stickers ordered from Cubesmith. They come with an instruction how to put them on the cube pieces correctly.
Here are the translations for the days and months for those of you not having had Latin at school or being a long, long time away:

January = Ianuarius
February = Februarius
March = Martius
April = Aprilis
May = Maius
June = Iunius Juni June
July = Quintilis (also: Iulius)
August = Sextilis (also: Augustus)
September = September
October = October
November = November
December = December

Be aware, that formerly the vowel U was written like a V!

The stickers for the Symmetrical Cube and the Escher Turtles are from Olivér Nagy.